Effect of supplementary glycerin on milk composition and heat stability in dairy goats
Objective This experiment was studied the effects of various levels of crude glycerin (CG) in dairy goat diet on daily intake, milk yield, milk composition, some physical properties and some quality changes of goat milk after sterilization. Methods Twelve 75% Saanen dairy goats (body weight = 49±3 k...
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2017-12-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/ajas-30-12-1711.pdf |
| _version_ | 1819030619924987904 |
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| author | Deela Thoh Patcharin Pakdeechanuan Pin Chanjula |
| author_facet | Deela Thoh Patcharin Pakdeechanuan Pin Chanjula |
| author_sort | Deela Thoh |
| collection | DOAJ |
| description | Objective This experiment was studied the effects of various levels of crude glycerin (CG) in dairy goat diet on daily intake, milk yield, milk composition, some physical properties and some quality changes of goat milk after sterilization. Methods Twelve 75% Saanen dairy goats (body weight = 49±3 kg; days in milk = 60±12 d) were randomly assigned in a completely randomized design to evaluate the effects of three experimental diets consisting of 0%, 5%, and 10% CG (dry matter basis) which were formulated to meet or exceed the nutrient requirements of goats. Experimental dairy goats were evaluated for feed and milk yield. Milk samples were analyzed for their composition, including fatty acids, casein profile, fat globule size, and color, and were sterilized to evaluate milk heat stability. Results There were no significant differences between 0% and 5% CG treatments infeed. Increasing CG supplementation from 0% to 5% increased milk yield from 2.38±0.12 to 2.64±0.23 kg/goat/d. In addition, milk samples from 5% CG treatment had the highest total solids, fat content and lactose content, and largest fat globule size. Increasing CG to 10% resulted in a decrease in milk fat. After sterilizing at 116°C, F0 = 3 min, goat milk samples from 5% CG treatment had slightly higher sediment content and comparatively higher degree of browning. Conclusion Considering milk yield, milk fat content and quality of sterilized milk, 5% CG supplementation in a total mixed ration has a potential for implementation in dairy goats. |
| first_indexed | 2024-12-21T06:33:02Z |
| format | Article |
| id | doaj.art-879499de724c4333a3b67b02f71cacdb |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-12-21T06:33:02Z |
| publishDate | 2017-12-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-879499de724c4333a3b67b02f71cacdb2022-12-21T19:12:57ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172017-12-0130121711171710.5713/ajas.17.006623761Effect of supplementary glycerin on milk composition and heat stability in dairy goatsDeela Thoh0Patcharin Pakdeechanuan1Pin Chanjula2 Department of Food Science and Nutrition, Faculty of Science and Technology, Prince of Songkla University, Pattani 94000, Thailand Department of Food Science and Nutrition, Faculty of Science and Technology, Prince of Songkla University, Pattani 94000, Thailand Department of Animal Science, Faculty of Natural Resources, Prince of Songkla University, Songkhla 90112, ThailandObjective This experiment was studied the effects of various levels of crude glycerin (CG) in dairy goat diet on daily intake, milk yield, milk composition, some physical properties and some quality changes of goat milk after sterilization. Methods Twelve 75% Saanen dairy goats (body weight = 49±3 kg; days in milk = 60±12 d) were randomly assigned in a completely randomized design to evaluate the effects of three experimental diets consisting of 0%, 5%, and 10% CG (dry matter basis) which were formulated to meet or exceed the nutrient requirements of goats. Experimental dairy goats were evaluated for feed and milk yield. Milk samples were analyzed for their composition, including fatty acids, casein profile, fat globule size, and color, and were sterilized to evaluate milk heat stability. Results There were no significant differences between 0% and 5% CG treatments infeed. Increasing CG supplementation from 0% to 5% increased milk yield from 2.38±0.12 to 2.64±0.23 kg/goat/d. In addition, milk samples from 5% CG treatment had the highest total solids, fat content and lactose content, and largest fat globule size. Increasing CG to 10% resulted in a decrease in milk fat. After sterilizing at 116°C, F0 = 3 min, goat milk samples from 5% CG treatment had slightly higher sediment content and comparatively higher degree of browning. Conclusion Considering milk yield, milk fat content and quality of sterilized milk, 5% CG supplementation in a total mixed ration has a potential for implementation in dairy goats.http://www.ajas.info/upload/pdf/ajas-30-12-1711.pdfGlycerinGoat MilkMilk CompositionMilk Sterilization |
| spellingShingle | Deela Thoh Patcharin Pakdeechanuan Pin Chanjula Effect of supplementary glycerin on milk composition and heat stability in dairy goats Asian-Australasian Journal of Animal Sciences Glycerin Goat Milk Milk Composition Milk Sterilization |
| title | Effect of supplementary glycerin on milk composition and heat stability in dairy goats |
| title_full | Effect of supplementary glycerin on milk composition and heat stability in dairy goats |
| title_fullStr | Effect of supplementary glycerin on milk composition and heat stability in dairy goats |
| title_full_unstemmed | Effect of supplementary glycerin on milk composition and heat stability in dairy goats |
| title_short | Effect of supplementary glycerin on milk composition and heat stability in dairy goats |
| title_sort | effect of supplementary glycerin on milk composition and heat stability in dairy goats |
| topic | Glycerin Goat Milk Milk Composition Milk Sterilization |
| url | http://www.ajas.info/upload/pdf/ajas-30-12-1711.pdf |
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