Effects of Compound Anaerobic Treated Wheat Straw with Urea and Sodium Bicarbonate on Lactation Performance and Serum Biochemical Indices of Laoshan Dairy Goats

LIU Peijian, ZHU Fenghua, GE Wei, CAO Yufang, CHENG Ming, LIN Yingting

doi:10.3969/j.issn.1006-267x.2018.02.024

2018 , Vol. 30 >Issue 2: 597 - 605

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.02.024

Molecular Nutrition

Effects of Compound Anaerobic Treated Wheat Straw with Urea and Sodium Bicarbonate on Lactation Performance and Serum Biochemical Indices of Laoshan Dairy Goats

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1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
2. Institute of Husbandry and Veterinary of Qingdao City, Qingdao 266000, China

Received date: 2017-09-30

Online published: 2018-02-02

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Abstract

This experiment was conducted to investigate the effects of compound anaerobic treated wheat straw with urea and sodium bicarbonate on lactation performance and serum biochemical indices of Laoshan dairy goats. Twenty four healthy Laoshan dairy goats in lactation with body weight of (53.20±1.75) kg, milk yield of (1.41±0.22) kg/d, and 2 parities were used by single factor randomized design and equally divided into 4 groups with 6 replicates per group and 1 goat per replicate. Diets were all mixed with concentrate, whole-plant corn silage, straw with the ratio of 4:3:3. The straw of four groups was wheat straw, compound anaerobic wheat straw (supplemented with 2.5% sodium bicarbonate and 4% urea, and ensilaged for 40 d), corn stover and peanut vine, respectively. The experiment lasted for 75 d consisting of a 15-day-pretest and a 60-day-test. The results showed as follows:1) dry matter intake (DMI) in compound anaerobic wheat straw group was significantly higher than that in wheat straw (P<0.05), corn stover and peanut vine groups, and improved by 25.67%, 11.37% and 10.33%, respectively. 2) Milk yield in compound anaerobic wheat straw group was significantly higher than that in wheat straw group (P<0.05), and was improved by 20.16%; 4% fat-corrected milk yield in compound anaerobic wheat straw group was not significantly different from that in corn stover and peanut vine groups(P>0.05). 3)Milk protein percentage in compound anaerobic wheat straw group was not significantly from that in wheat straw, corn stover and peanut vine groups (P>0.05), and milk fat percentage in compound anaerobic wheat straw group was significantly lower than that in peanut vine group (P<0.05); there were no significant differences of lactose percentage and milk non-fat solid percentage among groups(P>0.05); yields of milk fat, milk protein, lactose and milk non-fat solid in compound anaerobic wheat straw group were significantly higher than those in wheat straw group (P<0.05 or P<0.01), but were not significantly different from corn stover and peanut vine groups (P>0.05). 4) Serum total cholesterol content in compound anaerobic wheat straw group was significantly lower than that in other groups (P<0.05), and serum triglyceride content in compound anaerobic wheat straw group was lower than that in other groups, but the difference was not significant (P>0.05); there were no significant differences in serum glucose, urea nitrogen, total protein, albumin and globulin contents among groups (P>0.05). It is concluded that using compound anaerobic treated wheat straw with urea and sodium bicarbonate to feed Laoshan dairy goats can improve DMI, milk yield, milk fat percentage and milk protein percentage, increase milk composition yields, and its feeding effect is superior to wheat straw and similar to corn stover and peanut vine; there are no adverse effects on serum biochemical indices of Laoshan dairy goats; urea-sodium bicarbonate compound anaerobic treated wheat straw can be used as a roughage source for Laoshan dairy goats.

Key words： compound anaerobic treatment; roughage; lactation performance; serum biochemical indices

Cite this article

LIU Peijian, ZHU Fenghua, GE Wei, CAO Yufang, CHENG Ming, LIN Yingting . Effects of Compound Anaerobic Treated Wheat Straw with Urea and Sodium Bicarbonate on Lactation Performance and Serum Biochemical Indices of Laoshan Dairy Goats[J]. Chinese Journal of Animal Nutrition, 2018 , 30(2) : 597 -605 . DOI: 10.3969/j.issn.1006-267x.2018.02.024

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