Milk Recording
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Nutritive value of Tanzania grass for dairy cows under rotational grazing
A nutritional analysis of Tanzania grass (Megathyrsus maximus Jacquin cv. Tanzânia was conducted. Pasture was managed in a rotational grazing system with a 30-day resting period, three days of paddock occupation and two grazing cycles. Ten Holstein × Zebu crossbred cows were kept within a 2-ha area divided into 11 paddocks ha-1. Cows were fed 2 kg of corn
R. Bras. Zootec.. Publicado em: 2014-08
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2. Sources of variation in milk urea nitrogen in Paraná dairy cows
The present study was conducted to determine the relationship between milk urea nitrogen (MUN) and milk yield, fat and protein contents, breed and season effects, parity and days in milk in dairy cows from Paraná State, Brazil. A total of 127,428 test-days from 16,013 dairy cows belonging to 96 herds enrolled in an official milk recording program were analy
Revista Brasileira de Zootecnia. Publicado em: 2012-03
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3. ACOMPANHAMENTO da produção leiteira em nível de produtor.
2001
Belém. Publicado em: 2011
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4. Animal-environment interaction: effects of climatic environment over physiologic and productive responses of Holstein cows in free-stall / Interação animal-ambiente: efeito do ambiente climático sobre as respostas fisiológicas e produtivas de vacas Holandesas em free-stall
It has been well known the relation between the environment and physiological answers of lactating dairy cows under controlled environmental conditions. The present study aimed to monitor the animal answers allocated at typical housing system to identify the real environmental impact over it. A method was proposed to evaluate the stress level of the animal,
Publicado em: 2006
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5. The milk ejection reflex in the pig
1. The milk ejection reflex in response to suckling was studied in conscious sows by continuous recording of intramammary pressure, radioimmunoassay of plasma concentrations of neurohypophysial hormones, and observation of the behaviour of the sows and piglets.
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6. Survival and Activity of Frozen Starter Cultures for Cheese Manufacture
A study has been conducted on the effect of freezing and storage in liquid nitrogen on 13 strains of lactic streptococci. Cultures were frozen in droplet form and collected in mesh bags. After rapid thawing, the activity of the frozen cultures was compared with a culture of the same organism of the age usually used in cheese-making. The activities of the tes
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7. Activity of putative oxytocin neurones during reflex milk ejection in conscious rabbits.
Extracellular electrical recordings were taken from twenty antidromically identified paraventricular neurones in unanaesthetized, unrestrained rabbits. Neuronal activity was correlated with nursing behaviour of the doe and responses of the young during suckling. Magnocellular neurones were divided into two groups on the basis of their activity in suckling. G
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8. Chronic intracerebroventricular morphine and lactation in rats: dependence and tolerance in relation to oxytocin neurones.
1. Acutely, opioids inhibit oxytocin secretion. To study the responses of oxytocin neurones during chronic opioid exposure, forty-five lactating rats were infused continuously from a subcutaneous osmotically driven mini-pump via a lateral cerebral ventricle with morphine sulphate solution from day 2 post-partum for 5-7 days; the infusion rate was increased 2
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9. Analysis of bursting responses of oxytocin neurones in the rat in late pregnancy, lactation and after weaning.
1. Electrophysiological recordings were undertaken to compare bursting characteristics of oxytocin (OT) neurones at four reproductive stages: day 20 pregnancy, day 22 of pregnancy (expected day of parturition), day 7-11 of lactation, and day 5-6 after weaning. 2. Each OT neurone was recorded for 1 h of suckling, combined with cervico-vaginal probing at 5 min
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10. Naloxone excites oxytocin neurones in the supraoptic nucleus of lactating rats after chronic morphine treatment.
1. Lactating rats were implanted with a cannula in a lateral cerebral ventricle to deliver morphine (up to 50 micrograms/h) chronically from a subcutaneous osmotically driven mini-pump. After infusion of morphine for 5 days the rats were anaesthetized with urethane and prepared with ventral surgery for recording the electrical activity of single, antidromica