Cattle Reproduction

Use of Sexed Semen in Dairy Animals >Cattle Reproductio Use of Sexed Semen in Dairy Animals Introduction The sperm concentration in cow semen is 200 to 2000 million sperms per ml and bull gives 5 to 10 ml of semen and for artificial insemination we need 15 million spermatozoa. So from one ejaculate we can…

Induction of oestrus in buffalo heifer using progesterone Oestrus can be induced in buffalo heifer in the breeding season, by injecting a single dose of 11-hydroxy-progesterone available in the market. After injecting progesterone the buffalo heifer exhibits heat within a week. But do not inseminate in the first heat because there will be no conception….

Introduction The reproductive hormones are produced from the pituitary gland at the base of hypothalamus once the heifer is mature at the age of 15-16 months the hypothalamus succeeds releasing factor, which is known as GnRH, of which synthetic version is available in the market by the name of Receptal. This one releasing factor releases…

It is very important to diagnose the pregnancy status of your animals at 35 to 40 days of insemination because 30% of the pregnant animals come in heat so if pregnancy is confirmed at 35 days then there is no need to go for insemination. The false expression of heat is also a cause of…

Introduction Minerals are essential requirement of cow. However, the deficiency of minerals can cause many disease and can rise to many complications in cow. High yielding exotic cows need the proper amount of macro and micro minerals for their optimum production and reproduction. The availability of the minerals by vitamins and mineral mixture is shown…

MOET technology (Multiple Ovulation Embryo Transfer Technology) IVF (In-vitro Fertilization) Cloning Introduction In pig and dog there is a multiple ovulation and number of piglet and pups are too many. Whereas in man and cow there is a single ovulation. Only one ovulating cell ovulates however by injecting increasing quantity of follicular stimulating hormone available…

Introduction Till 70’s the milk has not been sold from villages, but now due to huge processing plants, milk is being sold. The milk production has become a big enterprise. To increase the milk production exotic breeds like Jersey and Holstein are being maintained. The sexed semen of these two breeds has meant fast replacement…

The high-quality proven semen should be used, and semen should be deposited in the mid-cervical region for the proper capacitation of the sperm. The correct method of AI is given in the figure and the description is available on YouTube. (See the figure below). Method of Doing AI in Cattle Myth Related to AI (Artificial…

Estrus cycle is of 21 days in Horse, Goat, Cow and Buffalo, whereas in Sheep it is of 16 days and in Dogs it is 150 to 200 days. The word estrus has been derived from the roman word Oestrus which means there is a mad desire for sex for 48 hours and copulation is…