Influence of maternal-offspring behaviour on the growth of guzerá calves
The present study€™s objective was to verify the influence of behavioral characteristics such as strength at birth and human assistance on growth of Guzerá breed calves until weaning, in addition to estimating the growth curve based on age, strength and need for human assistance of Guzerá animals. A...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto de Zootecnia
2017-11-01
|
| Series: | Boletim de Indústria Animal |
| Subjects: | |
| Online Access: | http://10.153.18.28/index.php/bia/article/view/1508 |
| _version_ | 1797744674563162112 |
|---|---|
| author | Gabriele Voltareli da Silva Bianca Vilela Pires Sergio Pereira Lima Luara Afonso de Freitas Lenira El Faro Maria Lucia Pereira Lima Claudia Cristina Paro Paz |
| author_facet | Gabriele Voltareli da Silva Bianca Vilela Pires Sergio Pereira Lima Luara Afonso de Freitas Lenira El Faro Maria Lucia Pereira Lima Claudia Cristina Paro Paz |
| author_sort | Gabriele Voltareli da Silva |
| collection | DOAJ |
| description | The present study€™s objective was to verify the influence of behavioral characteristics such as strength at birth and human assistance on growth of Guzerá breed calves until weaning, in addition to estimating the growth curve based on age, strength and need for human assistance of Guzerá animals. A total of 73 calves were used, 39 males and 34 females. The calves were classified according to the strength at birth (presence (1) or absence (0) and the need for human assistance (HA = 1 received assistance and HA = 0 received no assistance) 4 hours after calving occurred. The calves were weighed at birth (WB), at 120 ± 20 days (WA120) and during weaning at 210 ± 20 days (WW). The animals were divided into 5 weight classes according to the ages and weights measured. The models of Brody, Von Bertalanffy, Richards, Logístico and Gompertz were tested to estimate animals€™ growth until weaning. The birth month of the calves, sex and the need of human assistance influenced (P<0.05) WB and WA120. WW was influenced (P <0.05) by the effects of sex and the need for human assistance. Male calves had kept higher weights than females throughout the study. Among the models tested for growth curve estimation, the Von Bertalanffy model had the best fit for strength at birth and for human assistance. Asymptotic weight and maturity rate were higher in calves that did not require human assistance. The growth curve showed that the absence or presence of strength at birth does not affect weaning weight, while the need for human assistance impairs animal development until weaning.
|
| first_indexed | 2024-03-12T15:13:46Z |
| format | Article |
| id | doaj.art-20cda0e095e14b16b6ac2772c92cc26d |
| institution | Directory Open Access Journal |
| issn | 1981-4100 |
| language | English |
| last_indexed | 2024-03-12T15:13:46Z |
| publishDate | 2017-11-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-20cda0e095e14b16b6ac2772c92cc26d2023-08-11T17:40:23ZengInstituto de ZootecniaBoletim de Indústria Animal1981-41002017-11-0174Influence of maternal-offspring behaviour on the growth of guzerá calvesGabriele Voltareli da SilvaBianca Vilela PiresSergio Pereira LimaLuara Afonso de FreitasLenira El FaroMaria Lucia Pereira LimaClaudia Cristina Paro PazThe present study€™s objective was to verify the influence of behavioral characteristics such as strength at birth and human assistance on growth of Guzerá breed calves until weaning, in addition to estimating the growth curve based on age, strength and need for human assistance of Guzerá animals. A total of 73 calves were used, 39 males and 34 females. The calves were classified according to the strength at birth (presence (1) or absence (0) and the need for human assistance (HA = 1 received assistance and HA = 0 received no assistance) 4 hours after calving occurred. The calves were weighed at birth (WB), at 120 ± 20 days (WA120) and during weaning at 210 ± 20 days (WW). The animals were divided into 5 weight classes according to the ages and weights measured. The models of Brody, Von Bertalanffy, Richards, Logístico and Gompertz were tested to estimate animals€™ growth until weaning. The birth month of the calves, sex and the need of human assistance influenced (P<0.05) WB and WA120. WW was influenced (P <0.05) by the effects of sex and the need for human assistance. Male calves had kept higher weights than females throughout the study. Among the models tested for growth curve estimation, the Von Bertalanffy model had the best fit for strength at birth and for human assistance. Asymptotic weight and maturity rate were higher in calves that did not require human assistance. The growth curve showed that the absence or presence of strength at birth does not affect weaning weight, while the need for human assistance impairs animal development until weaning. http://10.153.18.28/index.php/bia/article/view/1508growthhuman assistancevitality |
| spellingShingle | Gabriele Voltareli da Silva Bianca Vilela Pires Sergio Pereira Lima Luara Afonso de Freitas Lenira El Faro Maria Lucia Pereira Lima Claudia Cristina Paro Paz Influence of maternal-offspring behaviour on the growth of guzerá calves Boletim de Indústria Animal growth human assistance vitality |
| title | Influence of maternal-offspring behaviour on the growth of guzerá calves |
| title_full | Influence of maternal-offspring behaviour on the growth of guzerá calves |
| title_fullStr | Influence of maternal-offspring behaviour on the growth of guzerá calves |
| title_full_unstemmed | Influence of maternal-offspring behaviour on the growth of guzerá calves |
| title_short | Influence of maternal-offspring behaviour on the growth of guzerá calves |
| title_sort | influence of maternal offspring behaviour on the growth of guzera calves |
| topic | growth human assistance vitality |
| url | http://10.153.18.28/index.php/bia/article/view/1508 |
| work_keys_str_mv | AT gabrielevoltarelidasilva influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves AT biancavilelapires influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves AT sergiopereiralima influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves AT luaraafonsodefreitas influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves AT leniraelfaro influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves AT marialuciapereiralima influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves AT claudiacristinaparopaz influenceofmaternaloffspringbehaviouronthegrowthofguzeracalves |