CALVING INTERVAL & AGE OF FIRST CALVING OF DAIRY COW

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REPRODUCTIVE MANAGEMENT OF DAIRY COW

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WEL COME

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Reproductive Management of Dairy Cows

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MURRAH BUFFALOES Age at first calving 48 months Lactation yield(305 days) 1800 kg Inter-calving period 18 months Milk fat 7 per cent

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Jersey cross / HF cross Age at first calving 26-28 Months Lactation yield (305 days) 2500 kg Inter-calving Period 14-16 months Milk fat 3.5-4.5 per cent

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Cow Name Saraswati Jamana Date of First calving 25-12-2007 18-11-2007 Service Period 8.5 Months 2 Months Calving Interval ( Secong Calving) 17.5 Months 11 + Months Sevice Period 6.5 Months 4.5 Months Calving Interval ( Third Calving) 17.5 Months 13.5 Months Sevice Period 6.5 Months TWO LACTATION 35 Months 25 Months

Age of First Calving : 

Age of First Calving Cow Name SHITA SHILA Date of Birth 15-03-2010 6-04-2009 Age of Puberty 16 Months 19 – 32 Months Age of First Calving 25 Months 41 Months

Age of First Calving : 

Age of First Calving Cow Name GOPI JAYMINI Date of Birth 8-04-2010 14-12-2009 Age of Puberty 16 Months 23 Months Age of First Calving 25 Months 32 Months

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Cow Name PUNAM NIRDHI Date of Birth 25-5-2009 28-01-2010 Age of Puberty 15 Months 17 Months Age of First Calving 24 Months 26.5 Months Sevice Period 8 Months 3.5 Months Calving Interval (Second Calving) 17 Months 12.5 Months Sevice Period 3 Months TWO LACTATION 41 Months 29 Months

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Factor affecting on Age of Puberty Malnutrition-Feed & Fodder, FeedSuppliment,Deworming Management- Heat Detaction Stress Awerness about profit & loss Illness,Weakness ,Disease Congenital defect Heat Detection, Cervix ijury

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Malnutrition

Postpartum reproduction - cattle: 

Aim to have a calf per cow per year with peak lactation Postpartum reproduction - cattle

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Heat Detection Conception Rate Pregnancy Rate Main Factors Affecting Pregnancy Rate

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HEAT DETACTION

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Sliming Restlessness Mounting activity Trailing other cows Bellowing Mounting or dirt marks Skin Marks Met-oestrous bleeding Secondary Signs of Heat

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Secondary Signs of Heat

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Commitment and understanding heat behavior Tail paint Oestrus Alert Patches Teaser Bull IMPROVING HEAT DETACTION

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Tail paint Patches

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Factors Affecting Conception Rate

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Factor affecting on Conception Rate A.I Hormonal Imbalance- Age, Breed, Feed & Fodder, Stress, Heavy Milk Production Metritis Endometritis Cervicitis/Band Cervix Malnutrition

Effect of Calving to Service Interval on Conception Rate: 

Effect of Calving to Service Interval on Conception Rate

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Effect of Calving Difficulty on Conception Rate

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Dystokia R.O.P Prolapse of uterus or vagina Payometra Illness Effect of Calving Difficulty on Conception Rate

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Factor affecting on Service period Malnutrition-Feed & Fodder Management- Heat Detaction Season Milk Production Illness Disease Weakness Age

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Effect of AI timing on Conception Rate

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Use High EBI (Economic Breeding Index sires) Reproduction: Calving interval Cow survival Production: Yield fat + Protein EBI Long-term improvement of cow fertility

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Calving Interval = 12 Months Average 83.1 lbs/d Calving Interval = 13 Months Average 80.0 lbs/d Effect of Extended Lactation on Average Milk/d

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THANK YOU