本文關(guān)鍵詞：β-胡蘿卜素不同添加量對(duì)奶牛產(chǎn)后繁殖性能、生殖激素及抗氧化指標(biāo)的影響　出處：《寧夏大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 奶牛 β-胡蘿卜素 繁殖性能 生殖激素 抗氧化指標(biāo)

【摘要】：近年來(lái),隨著奶牛產(chǎn)奶量的不斷提高,奶牛繁殖性能呈現(xiàn)下降趨勢(shì),制約了奶牛業(yè)的發(fā)展。如何有效提高奶牛繁殖性能是奶牛養(yǎng)殖業(yè)關(guān)注的問(wèn)題之一,本研究通過(guò)在奶牛日糧中添加不同量的β-胡蘿卜素,探討其對(duì)奶牛產(chǎn)后繁殖性能、生殖激素及抗氧化能力的影響,為提高奶牛繁殖性能提供科學(xué)依據(jù)。試驗(yàn)一β-胡蘿卜素不同添加量對(duì)奶牛產(chǎn)后繁殖性能的影響試驗(yàn)選用年齡、體重、體況相近的頭胎荷斯坦奶牛60頭,采取配對(duì)原則分為對(duì)照組和試驗(yàn)1組、試驗(yàn)2組,每組各20頭。對(duì)照組飼喂基礎(chǔ)日糧,試驗(yàn)1組飼喂基礎(chǔ)日糧+ β-胡蘿卜素200mg/頭·d,試驗(yàn)2組飼喂基礎(chǔ)日糧+β-胡蘿卜素400mg/頭·d,研究添加不同置β-胡蘿卜素對(duì)奶牛產(chǎn)后繁殖性能的影響。試驗(yàn)期為產(chǎn)后0～90天。研究結(jié)果表明,奶牛產(chǎn)后添加400mg/頭·dβ-胡蘿卜素可以減少配種次數(shù)(p0.05),有縮短奶牛產(chǎn)后首次發(fā)情時(shí)間和首次配種時(shí)間,減少空懷天數(shù),提高情期受胎率,降低產(chǎn)后繁殖疾病的趨勢(shì)(p0.05),且每頭每天添加400mgβ-胡蘿卜素的效果優(yōu)于添加200mgβ-胡蘿卜素。試驗(yàn)二β-胡蘿卜素不同添加量對(duì)奶牛產(chǎn)后生殖激素的影響試驗(yàn)動(dòng)物的選擇與分組、試驗(yàn)設(shè)計(jì)與飼養(yǎng)管理同試驗(yàn)一,研究添加不同量β-胡蘿卜素對(duì)奶牛產(chǎn)后生殖激素分泌的影響。研究結(jié)果表明,在日糧中添加β-胡蘿卜素有升高血清中孕酮的趨勢(shì),但對(duì)血清中促卵泡素、促黃體素和雌激素的濃度沒(méi)有影響(p0.05)。在日糧中添加200mg/頭·d組促卵泡素和雌激素濃度高于400mg/頭·d組(p0.05),促黃體生成素和孕酮濃度與400mg/頭·天組差異不顯著(p0.05)。試驗(yàn)三β-胡蘿卜素不同添加量對(duì)奶牛產(chǎn)后血清中抗氧化指標(biāo)的影響試驗(yàn)動(dòng)物的選擇與分組、試驗(yàn)設(shè)計(jì)與飼養(yǎng)管理同試驗(yàn)一,研究添加添加不同量β-胡蘿卜素對(duì)奶�？寡趸笜�(biāo)的影響。研究結(jié)果顯示,隨著日糧中β-胡蘿卜素添加量的增加,奶牛血清中谷胱甘肽過(guò)氧化物酶濃度、超氧化物歧化酶濃度呈上升趨勢(shì),且添加β-胡蘿卜素組奶牛血清中總抗氧化能力、谷胱甘肽過(guò)氧化物酶濃度均顯著高于不添加組(p0.05);奶牛血清中丙二醛濃度呈下降趨勢(shì),且添加β-胡蘿卜素組的丙二醛濃度均低于不添加組(p0.05)。添加400mg/頭·dβ-胡蘿卜素組血清超氧化物歧化酶、谷胱甘肽和丙二醛過(guò)氧化物酶濃度高于添加200mg/頭· d組(P0.05),總抗氧化能力低于200mg/頭·d組(p0.05)。
[Abstract]:In recent years, with the continuous improvement of milk production, dairy cow reproductive performance presents a downward trend, restricting the development of dairy cattle industry. How to effectively improve cow breeding performance is one of the concerns of dairy cattle breeding industry. In this study, the effects of different amounts of 尾 -carotene on postpartum reproductive performance, reproductive hormones and antioxidant capacity of dairy cows were studied. In order to provide the scientific basis for improving the reproductive performance of dairy cattle, the effect of 尾 -carotene on postpartum reproductive performance of dairy cows was studied. 60 Holstein cows with similar age, body weight and body condition were selected. The control group was divided into two groups according to the principle of pairing. The control group was fed with basal diet and the experimental group 1 was fed with 尾 -carotene 200 mg / head 路d. Group 2 was fed a basal diet of 400 mg / head 路d of 尾 -carotene. The effect of different 尾 -carotene on postpartum reproductive performance of dairy cows was studied. The experimental period was 90 days postpartum. The results showed that the effect of 尾 -carotene on postpartum reproductive performance of dairy cows was 90 days. The addition of 400 mg / head 路d 尾 -carotene in postpartum dairy cows can reduce the frequency of breeding, shorten the first estrus time and the first breeding time, and reduce the days of empty pregnancy. The rate of conception in estrous period was increased and the tendency of postpartum reproductive diseases was decreased (p 0.05). The effect of 400 mg 尾 -carotene per day was better than that of 200mg 尾 -carotene. The effect of different doses of 尾 -carotene on postpartum reproductive hormone selection in dairy cows. And groups. The experiment design and feeding management were the same as experiment 1. The effects of different amounts of 尾 -carotene on the secretion of postpartum reproductive hormones in dairy cows were studied. Supplementation of 尾 -carotene in diet tended to increase progesterone in serum, but to follicle stimulating hormone in serum. The concentration of luteinizing hormone and estrogen had no effect on the concentration of P0.050.The concentration of follicle stimulating hormone and estrogen in 200 mg / head 路d group was higher than that in 400 mg / head 路d group (P 0.05). The concentrations of luteinizing hormone and progesterone were not significantly different from those of 400 mg / head 路day group (p 0.05). Effect of different 尾 -carotene supplementation on antioxidant indexes in postpartum serum of dairy cows. Selection and grouping of experimental animals. The effect of adding different amounts of 尾 -carotene on antioxidant index of dairy cattle was studied. The results showed that with the increase of 尾 -carotene in diet, the effect of 尾 -carotene on the antioxidant index of dairy cattle was studied. The concentration of glutathione peroxidase and superoxide dismutase in serum of dairy cattle showed an increasing trend, and the total antioxidant capacity in serum of cows with 尾 -carotene was increased. The concentration of glutathione peroxidase was significantly higher than that of the control group. The concentration of malondialdehyde in serum of dairy cattle showed a decreasing trend. The concentration of malondialdehyde in 尾 -carotene group was lower than that in non-addition group (P 0.05), and the serum superoxide dismutase (SOD) level in 400 mg / head 路d 尾 -carotene group was lower than that in control group. The concentration of glutathione and malondialdehyde peroxidase was higher than that of 200mg / head 路d group, and the total antioxidant capacity was lower than that of 200mg / head 路d group.
【學(xué)位授予單位】：寧夏大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S823.5

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